IIT(ISM) conducts the first ever multi layered electronically detonated composite blasting of 20m Overburden and 23m coal together on 2nd September 2018 at one of the largest opencast coal projects, Nigahi (Northern Coalfields Ltd) using smart design developed by IIT(ISM) Dhanbad.
Prof A. K. Mishra, Dr B. S. Choudhary of Department of Mining Engineering, Indian Institute of Technology (ISM) Dhanbad are the brain behind this feat. A total of 1 lakh cu m of overburden and 60000 tonnes of coal were blasted together in one go. The overburden bench was casted and the profile of bench was lowered by 8m while coal bench was fired as stand-up blast with no movement to ensure no mixing of coal with overburden. The blast was conducted as a controlled blast with no fly-rock, and ground vibrations within statutory limits. This is the first ever blast of such kind in the country. With the success of this blast, crores of rupees will be saved in each blast of a coal strip of 80m width in a mega- dragline bench. Few more such blasts have been planned for near future. Moreover, this is the first time ever in the country when multi-layered blasting of coal and overburden together has been conducted. It is believed to change the road ahead and the future of blasting in mining business.
This project is fully sponsored by Ministry of Coal, G.o.I. and the Ministry shall be greatly benefited by this development.